Remote control switch actuating device



Nov. 10, 1953 K. J. JUNGHOLM 3, 7

REMOTE CONTROL SWITCH ACTUATING DEVICE Filed Aug. 30, 1949 Z zz 22 1 P33;

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BY M M ATTORNEY Patented Nov. 10, 1953 OFFICE REMOTE CONTROL swrrcn ACTUATING DEVICE Karl Johan J ungholm, Stockholm, Sweden Application August 30, 1949, Serial No. 113,056

2 Claims. (01. 200172) This invention relates to improvements in actuating means for electric switches which, because of special conditions, have to be located on the opposite side of a wall from the operator, and which, therefore, require that the intermediate shaft must pass through the wall.

In my earlier Patent No. 2,058,695, dated October 2'7, 1936, an actuating mechanism of this kind is disclosed which includes face plates located in engagement with the opposite faces of the wall, an actuating handle on one side, an actuated element on the other side and an intermediate shaft connecting the actuating and actuated elements. It has now been found that in cases where the opposite faces of the wall are not exactly parallel the intermediate shaft is subjected to bending stresses which make the actuation more difficult and also in time results in breakage.

An object of the present invention is to provide a construction of such actuating mechanism whereby the bending and binding of the actuating shaft is eliminated even in cases where the opposite faces of the wall are very considerably out of parallel with each other.

A further object of the invention is to provide a construction of remote control actuating devices for actuating an electric switch on the opposite side of a wall which will prevent binding and bending of the actuating shaft and consequent breakage in cases where the openings at the opposite faces of the wall are not in exact alignment. I

An embodiment of the invention is represented by way of example in the accompanying drawings in which:

Figure 1 is a section through a part of a wall and the switch actuating mechanism, and

Figure 2 is a sectional view of a detail on the line II-II of Fig. 1.

In Fig. 1, numeral l designates the switch as disposed in a switch housing 2 which is located at one side of a wall 3. On the opposite side of the wall is disposed the switch handle 4 along with a wall face plate 5 provided with a switch protecting collar 6. On the sides facing the wall, the switch housing 2 and protective collar 6 are each provided with a bearing bushing in which the shaft studs 1 and 9 are journaled. On the ends of the shaft studs which extend into the wall are attached intermediate coupling members l0 and II which are fastened to the shaft studs by means of screws or pins l2 and M, for which purpose the intermediate members are provided with apertures or recesses 15. The intermediate members are provided with recesses l6, ll, respectively, for receiving the ends of the intermediate shaft I9 as well as with openings 29, 2|, respectively, for the shaft studs '1 and 9. The apertures for the shaft studs are a little larger than the thickness of the shaft studs, and the openings or recesses for the screws or pins that hold the intermediate members are considerably larger along the longitudinal direction of the intermediate member than the thickness of said screws or pins. By this means a certain looseness is obtained partly between the shaft studs and the intermediate members and partly between the shaft studs and the intermediate shaft. This arrangement prevents breakage of the shaft studs, intermediate members and intermediate shafts if the sides of the Wall 3 are not parallel, or if the shaft studs are not disposed fully in alignment with respect to each other.

In the drawing the intermediate members [0 and H are provided with partitions 22 between the shaft studs and intermediate shaft. This partition may be omitted if the intermediate member is made of material of suitable thickness. Having thus described the invention, I claim: 1. In mechanism for actuating a rotary switch member, having a rotatable operating element located at a distance from said switch and capable of being manually actuated for turning said rotary switch off and on, and means for transmitting rotary movement from said operating element to said rotary switch, the improvement residing in that said transmitting means comprises a pair of opposed stud shafts having spaced ends projecting, respectively, from said rotatable operating switch and from said rotary element, a shaft disposed between the ends of said stud shafts, collars respectively fitting and slidable over each end of said shaft and extending over a substantial portion of said shaft, portions of said collars further projecting over a portion, respectively, of said stud shafts, said collar portions fitting over said stud shaft ends loosely to allow wobble, each said collar portion projecting over the stud shafts being formed with elongated slots, and pins extending through said stud shaft ends and in said collar slots and slidable in said slots lengthwise of said collars.

2. A device, comprising a rotary switch having a rotatable stud shaft for the operation of the switch. a handle for operating the switch having a rotatable stud shaft, a shaft disposed between the ends of the stud shafts, a collar fitting and non-rotatably slidable over each end of the shaft over a substantial length thereof and having portions projecting and loosely fitting over the stud shaft ends, each said collar portion projecting over the stud shafts being formed with elongated slots, and pins extending through the stud shafts ends and in the collar slots and slidable in the slots lengthwise of the collars so as to provide for a flexible coupling between each stud shaft and its appertaining collar.

KARL JOHAN J UNGHOLM.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,241,100 Eden Sept. 25, 1917 10 1,417,402 Mattern May 23, 1922 1,947,965 Beggs Feb. 20, 1934 2,058,695 Jungholm Oct. 27, 1936 FOREIGN PATENTS 15 Number Country Date 684,810 Germany Dec. 6, 1939 

